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Method and device for preparing high alloy materials by solid and liquid mixing and continuous extrusion

A technology for solid-liquid mixing and alloying materials, which is applied in the field of solid-liquid mixing continuous extrusion to prepare high-alloy materials, can solve the problems of low yield, low density, and reduce the number and size of equilibrium precipitation phases, so as to improve the density and yield, reduce intermediate steps, increase the effect of nucleation rate

Active Publication Date: 2018-12-18
北京兴荣源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hybrid casting can refine grains, reduce the number and size of equilibrium precipitates, and obtain partially quenched and solidified structures. The performance of the alloy is better than that of traditional casting and semi-solidified casting. This method has a faster cooling rate and can obtain rapid solidification. structure; the process is simple and easy to process and form; the semi-solid structure with good rheological properties can be directly subjected to rheological shaping; suitable for the preparation of various alloys and composite materials, but this method has low density and low yield shortcoming

Method used

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  • Method and device for preparing high alloy materials by solid and liquid mixing and continuous extrusion
  • Method and device for preparing high alloy materials by solid and liquid mixing and continuous extrusion

Examples

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Effect test

Embodiment 1

[0027] A device for preparing high-alloy materials by solid-liquid mixing and continuous extrusion, such as figure 1 As shown, it includes extrusion wheel 1, extrusion wheel groove 2, deflector 3, feeding device 4, mold 6, plug 7; said extrusion wheel 1 is provided with extrusion wheel groove 2, deflector 3 Located above the extrusion wheel groove 2, inserted into the extrusion wheel groove 2 at an angle of 40°, the feeding device 4 is set above the wheel groove and inserted vertically into the extrusion wheel groove 2 and located on the side of the deflector 3, extrusion The wheel groove 2 is provided with a plug 7, the plug 7 is tangent to the extrusion wheel groove 2, the line formed by the upper surface of the plug 7 and the center of the extrusion wheel 1 and the insertion point of the deflector 3 are in line with the center of the extrusion wheel 1 The straight line that forms is vertical, and plug 7 is connected with mold 6, and mold 6 is an extrusion die, and the upper...

Embodiment 2

[0035] A device for preparing high-alloy materials by solid-liquid mixing and continuous extrusion. The difference from Example 1 is that the inclination angle of the guide plate 3 inserted into the extrusion wheel groove 2 is 70°, and other components are the same as the device in Example 1. .

[0036] The method for preparing Al-20Si-2Fe by solid-liquid mixing and continuous extrusion using the device of this embodiment, the specific steps are as follows:

[0037] (1) Ingredients: mix and mix the raw materials according to the mass percentage of 78% Al, 2% Fe and 20% Si;

[0038] (2) Melting: put the aluminum-iron-silicon mixed powder prepared in step (1) into the crucible, put the crucible into the metal melting furnace, and set the temperature to 1500°C for melting;

[0039](3) Forming: Slowly pour the molten metal obtained in step (2) into the extrusion wheel groove 2 on the extrusion wheel 1 along the guide plate 3, start the motor, and drive the extrusion wheel 1 to ro...

Embodiment 3

[0043] A device for preparing high-alloy materials by solid-liquid mixing and continuous extrusion. The difference from Example 1 is that the deflector 3 is inserted into the extrusion wheel groove 2 with an inclination angle of 60°, and other components are the same as the device in Example 1. .

[0044] The method for preparing Al-5Cu by solid-liquid mixing and continuous extrusion using the device of this embodiment, the specific steps are as follows:

[0045] (1) Ingredients: Mix and mix the raw materials according to the mass percentage of 95% Al and 5% Cu;

[0046] (2) Melting: Put the aluminum-copper mixed powder prepared in step (1) into the crucible, put the crucible into the metal melting furnace, and set the temperature to 1100°C for melting;

[0047] (3) Forming: Slowly pour the molten metal obtained in step (2) into the extrusion wheel groove 2 on the extrusion wheel 1 along the guide plate 3, start the motor, and drive the extrusion wheel 1 to rotate, and the ex...

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Abstract

The invention discloses a method and a device for preparing high alloy materials by solid and liquid mixing and continuous extrusion. Molten-state metal liquid flows into an extrusion wheel groove along a guide plate; after the metal liquid flows into the wheel groove, powder is added in the metal liquid; and solid-liquid mixtures enter a mold under the effects of rotation of the extrusion wheel groove and a plug, and are accumulated in the mold to extrude out finished products. The method and the device have the advantage of stirring and crushing dendritic crystals in semi-solid-state casting, meanwhile, can prevent the defects of thick and nonuniform structures of products caused by casting to achieve the purpose of grain refining, can improve the compactness and the material yield, andmeanwhile, can shorten the metal solidification time, shorten the process flow and improve the production efficiency.

Description

technical field [0001] The invention discloses a method and a device for preparing high-alloy materials by solid-liquid mixing continuous extrusion, and belongs to the technical field of metal forming continuous extrusion. Background technique [0002] The existing methods for preparing high-alloy materials mainly include a series of new methods such as semi-solid processing, spray deposition and solid-liquid mixed casting. [0003] The semi-solid processing method was proposed by Professor Flemings and others in the United States. Its main processing is to use mechanical or electromagnetic stirring to stir the alloy melt at a certain temperature in the solid-liquid two-phase region. The dendrite structure is broken to produce spherical solid phase particles, and then the melt is directly rheocasted, which is a material forming and preparation process. This method can produce a finer grain structure at a lower pouring temperature, significantly improve the quality of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/02B21C23/21
CPCB21C23/02B21C23/21B21C23/212
Inventor 尹建成牛应硕刘英莉张八淇钟毅
Owner 北京兴荣源科技有限公司
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